Sample VAL 31

NavDat sample number 38765

Sample

Sample ID	VAL 31
Alternate ID	275
Rock type	VOLCANIC
Material	IGNEOUS
Comment	Un. Florence, Italy

Location

Latitude	19.4
Longitude	-100.156
Location	Zitacuaro, Mich.
State / province	Mexico

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2		1	3	Quaternary

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	65.86		WT%	UNKNOWN
TIO2	0.54		WT%	UNKNOWN
AL2O3	16.06		WT%	UNKNOWN
FE2O3	1.77		WT%	UNKNOWN
FEO	1.96		WT%	UNKNOWN
MNO	0.06		WT%	UNKNOWN
MGO	2.8		WT%	UNKNOWN
CAO	4.59		WT%	UNKNOWN
NA2O	4.11		WT%	UNKNOWN
K2O	1.6		WT%	UNKNOWN
P2O5	0.11		WT%	UNKNOWN
LOI	0.54		WT%	UNKNOWN
TOTAL	100		WT%	UNKNOWN

References

Capra, L; Macias, J L; Garduno, V H (1997) The Zitacuaro volcanic complex, Michoacan, Mexico; magmatic and eruptive history of a resurgent caldera. Geofisica Internacional. 36; 3, Pages 161-179. 1997.